ASTM D3715 - D 3715M - 98 (2019)

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Designation: D3715/D3715M −98 (Reapproved 2019)

Standard Practice for

Quality Assurance of Pressure-Sensitive Tapes

This standard is issued under the ﬁxed designation D3715/D3715M; the number immediately following the designation indicates the

year of original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last

reapproval. A superscript epsilon (´) indicates an editorial change since the last revision or reapproval.

This standard has been approved for use by agencies of the U.S. Department of Defense.

1. Scope

1.1 This practice contains uniform quality assurance provi-

sions for pressure-sensitive tapes and establishes sampling

plans and procedures for acceptance inspection.

1.2 Limitations:

1.2.1 This practice only includes procedures for when an

upper or a lower speciﬁcation limit is given. It does not provide

for double, both minimum and maximum, speciﬁcation limits.

NOTE 1—When double speciﬁcation limits are given (applies to

variables testing only), use may be made of Table C-3 and Example C-3

of ANSI/ASQC Z1.9.

1.2.2 The variables sampling plans apply to a single quality

characteristic. Having obtained the sample and the responses to

the physical property tests, acceptance is determined on one

quality characteristic at a time. The process is repeated for each

additional characteristic.

1.2.3 The variables sampling plans require that the response

to each quality characteristic is normally distributed either

directly or by transformation. If this is not known, the potential

user of this practice should seek the counsel of someone with

sufficient understanding of statistical techniques to provide that

information.

1.3 The values stated in either SI or inch-pound units are to

be regarded separately as standard. The values stated in each

system may not be exact equivalents; therefore, each system

must be used independently, without combining values in any

way.

1.4 This standard does not purport to address all of the

safety concerns, if any, associated with its use. It is the

responsibility of the user of this standard to establish appro-

priate safety, health, and environmental practices and deter-

mine the applicability of regulatory limitations prior to use.

1.5 This international standard was developed in accor-

dance with internationally recognized principles on standard-

ization established in the Decision on Principles for the

Development of International Standards, Guides and Recom-

mendations issued by the World Trade Organization Technical

Barriers to Trade (TBT) Committee.

2. Referenced Documents

2.1 ASTM Standards:

D996 Terminology of Packaging and Distribution Environ-

ments

2.2 ANSI/ASQC Standards:

ANSI/ASQC A2 Terms, Symbols, and Deﬁnitions for Ac-

ceptance Sampling

ANSI/ASQC A3 Quality Systems Terminology

ANSI/ASQC Q94 Quality Management and Quality System

Elements—Guidelines

ANSI/ASQC Z1.4 Sampling Procedures and Tables for In-

spection by Attributes

ANSI/ASQC Z1.9 Sampling and Tables for Inspection by

Variables for Percent Defective

3. Terminology

3.1 Deﬁnitions—General terms in this practice are deﬁned

in Terminology D996, ANSI/ASQC A2, and ANSI/ASQC A3.

3.2 Deﬁnitions of Terms Speciﬁc to This Standard:

3.2.1 acceptability criterion—the comparison made be-

tween a factor, number, or constant found in the sampling plan

and the examination or test result information from a single

quality characteristic to determine if the lot should be accepted

or rejected. For inspection by attributes the acceptability

criterion is a comparison with the acceptability constant found

in Table 1.

3.2.2 acceptable quality level (AQL)—a nominal value ex-

pressed in terms of percent defective or defects per hundred

units, whichever is applicable, speciﬁed for a given group of

defects of a product (see ANSI/ASQC A2).

This practice is under the jurisdiction of ASTM Committee D10 on Packaging

and is the direct responsibility of Subcommittee D10.14 on Tape and Labels.

Current edition approved Aug. 1, 2019. Published August 2019. Originally

published in 1978. Last previous edition approved as D3715 – 98 (2011). DOI:

10.1520/D3715_D3715M-98R19.

For referenced ASTM standards, visit the ASTM website, www.astm.org, or

contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM

Standards volume information, refer to the standard’s Document Summary page on

the ASTM website.

Available from Standardization Documents Order Desk, Bldg. 4 Section D, 700

Robbins Ave., Philadelphia, PA 19111-5094, Attn: NPODS.

Available from American Society for Quality (ASQ), 310 West Wisconsin Ave.,

Milwaukee, WI 53203.

This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the

Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

3.2.3 defect—any nonconformance of the unit of product to

speciﬁed requirements; it is classiﬁed according to its serious-

ness.

3.2.4 defects per hundred units—of any given quantity of

units of product, is the number of defects contained therein

divided by the total number of units of product, the quotient

multiplied by one hundred (one or more defects being possible

in any unit of product). Expressed as an equation:

Defects per hundred units 5number of defects 3100

number of units inspected (1)

3.2.5 defective unit—a unit of product that contains one or

more defects.

3.2.6 end item—the actual product or commodity being sold

under the material speciﬁcation. It is in its most complete form

and may be either packed for shipping or at a production stage

just preceding packing. It may or may not be the same as the

unit of product deﬁned in 3.2.17.

3.2.7 end-item examination—the inspection of the roll of

tape for those characteristics which are either easily discernible

by visual inspection or can be simply measured by a hand rule

(such as width). All characteristics of this type are considered

as attributes.

3.2.8 end-item testing—the inspection of the unit of product

that involves measurement of physical properties on a continu-

ous scale. All characteristics of this type are considered as

variables.

3.2.9 inspection—the process of measuring, examining,

testing, gaging, or otherwise comparing the unit of product

with the applicable requirements (see ANSI/ASQC A2).

3.2.10 inspection by attributes—inspection whereby either

the unit of product is classiﬁed simply as defective or non-

defective or the number of defects in the unit of product is

counted, with respect to a given requirement or set of require-

ments (see ANSI/ASQC A2).

3.2.11 inspection by variables—inspection wherein a speci-

ﬁed quality characteristic on a unit of product is measured on

a continuous scale, such as pounds, inches, feet per second,

etc., and a measurement is recorded (see ANSI/ASQC A2).

3.2.12 inspection lot—a collection of units of product from

which a sample is drawn and inspected to determine compli-

ance with the acceptability criteria.

3.2.13 material speciﬁcation—that document covering a

product or set of products and specifying the parameters that

deﬁne the product(s) (see ANSI/ASQC A3).

3.2.14 percent defective—the number of defective units of

product contained therein, divided by the total number of

product, the quotient multiplied by one hundred (a unit being

considered defective if it contains one or more defects).

Expressed as an equation:

Percent defective 5number of defective units 3100

number of units inspected (2)

3.2.15 quality characteristic—for inspection, that character-

istic of a unit of product that is actually measured to determine

conformance with a given requirement.

3.2.16 speciﬁcation limit(s)—the requirement that a quality

characteristic should meet. This requirement may be expressed

as an upper speciﬁcation limit, or a lower speciﬁcation limit;

called herein a single speciﬁcation limit.

3.2.17 unit of product—the entity of product inspected in

order to determine its measurable quality characteristic. For

this practice the unit of product will usually be a roll of tape.

The unit of product may or may not be the same as the unit of

purchase, supply production, or shipment. It is also called

sample unit in this practice.

4. Signiﬁcance and Use

4.1 The quality of a tape product is determined by the

quality systems of the tape producer, including all processes

involved in the engineering and production of the product. It is

recommended that appropriate sections of ANSI/ASQC Q94 be

included in a producer’s quality systems. This practice does not

intend to standardize these systems. A producer’s reputation, a

producer’s certiﬁcation of conformance, or evidence of a

producer’s quality systems are often sufficient to ensure a

purchaser or user of a consistent quality. Acceptance sampling

is useful when an objective basis of contract or speciﬁcation

conformance is desired.

TABLE 1 Sampling Plans for Inspection by Variables

(Variability Unknown—Single Speciﬁcation Limit)

Lot Size (100-m

[yd

]

Units)

Sample

Size

Acceptable Quality Levels (Normal Inspection)

Sample

Size

Acceptable Quality Levels (Reduced Inspection)

.65 1.00 1.50 2.50 4.00 6.50 10.00 1.00 1.50 2.50 4.00 6.50 10.00

kkkk kkk kkkkkk

301

300

500

↓

0.651

↓

0.598

0.587

0.525

0.502

0.450

0.401

0.364

0.296

0.276

0.587

0.502

0.401

0.296

0.178

501 to 800 5 0.663 0.614 0.565 0.498 0.431 0.352 0.272 3 l 0.587 0.502 0.401 0.296 0.178

801 to 1 300 7 0.613 0.569 0.525 0.465 0.405 0.336 0.266 3 ↓0.587 0.502 0.401 0.296 0.178

1 301 to 3 200 10 0.755 0.703 0.650 0.579 0.507 0.424 0.341 4 0.598 0.525 0.450 0.364 0.276 0.176

3 201

8 001

8 000

22 000

0.792

0.815

0.738

0.779

0.684

0.723

0.610

0.647

0.536

0.571

0.452

0.484

0.368

0.398

0.565

0.525

0.498

0.465

0.431

0.405

0.352

0.336

0.272

0.266

0.184

0.189

1.00 1.50 2.50 4.00 6.50 10.00 15.00

Acceptable Quality Levels (tightened inspection)

This table contains information extracted from Tables A-2 (inspection level I), C-1, and C-2 from ANSI/ASQC Z1.9.

↓= Use the ﬁrst sampling plan below arrow including the larger sample size and the kvalue.

k= Acceptability constant.

D3715/D3715M − 98 (2019)

4.2 The intention of this practice is to provide a reasonably
simple document which can be used by both the buyer and
seller of pressure-sensitive tape to determine if the product
offered for sale meets some predetermined speciﬁcation for the
product. This practice offers the procedures for determining the
size of the sample to be inspected and the criteria for
determining whether the lot (amount of material offered for
sale) should be accepted or rejected. This practice draws from
and is based on both ANSI/ASQC Z1.4 and ANSI/ASQC Z1.9.
4.3 Two forms of sampling plans are included: sampling by
attributes and sampling by variables. Sampling by attributes is
used for end-item examination and both are used where
appropriate for end-item testing. Sampling by attributes has the
advantage of simplicity while sampling by variables has the
advantage of costing less for the equivalent assurance of the
correctness of decisions.
4.3.1 Sampling plans for inspection by attributes (see Table
2), should be used for end-item examination (see 5.3).
4.3.2 Sampling plans for inspection by variables (see Table
1and 5.4), should be used for end-item testing except as
indicated in 5.4.1.2(a).
4.4 Use of this practice assumes that a speciﬁcation deﬁning
one or more quality characteristics exists. It is suggested that
buyer and seller agree on acceptable quality levels (AQL) from
within the choices shown in the tables of this practice.
4.5 When conditions warrant switching from normal to
tightened or reduced inspection, the appropriate sampling plans
are available in Table 1 and Table 2. The decision to switch
should be agreed upon between the buyer and the seller. When
lots are rejected under normal inspection it is usual to go to
tightened inspection. No change in AQL is made, but the
assurance of making the correct decision is improved usually
by the sampling plan calling for a larger sample size. Reduced
inspection is a switch from normal inspection made when some
number of lots, usually 10, passes in consecutive order.
Switching should move from reduced to normal and from
normal to tightened or from tightened to normal without
skipping an intermediate step.
5. Procedure
5.1 Where it can be demonstrated that a supplier’s quality
control system provides a similar degree of assurance as that
obtained through the use of this practice, the supplier may use
that system in place of the system described herein. In case of
conﬂict, the system described in this practice shall be used.
5.2 Where applicable, inspection (examination or testing) at
some prior stage of manufacture, for example in-process or raw
material, can be used instead of inspection of the end item. An
example of this might be the use of the tensile strength test
performed at the raw material testing stage rather than on the
end item.
5.3 End-Item Examination:
5.3.1 Sampling:
5.3.1.1 Lot Size, for the purpose of determining the sample
size, shall be expressed in units of rolls for examination under
5.3.2.1 – 5.3.2.3 inclusive, and shall consist of all the tape
material presented for examination at one time. The material
shall be of the same type, class, and color, manufactured by the
same process, from the same components, at one plant by one
manufacturer under the same conditions.
5.3.1.2 Sample Size—The number of units of product (rolls
of tape) to be examined shall be found in Table 2 under sample
size. Use the sampling plans for normal inspection unless
tightened or reduced inspection has been speciﬁcally agreed
upon.
5.3.1.3 The following table illustrates the AQLs that have
commonly been used with the examinations found in 5.3.2.
The graduation follows traditional levels of importance for the
attributes collected together in the tables given in 5.3.2.1,
5.3.2.2, and 5.3.2.3.Table 2 illustrates only these AQLs.
Examination Paragraph AQL, %
5.3.2.1 2.5
5.3.2.2 4.0
5.3.2.3 10.0
5.3.2 Examination—Examine in accordance with the de-
fects listed in 5.3.2.1,5.3.2.2 and 5.3.2.3 and AQLs set forth in
the table in 5.3.1.3 when sampled from the shipment. No more
TABLE 2 Sampling Plans for Inspection by Attributes
A
Lot Size in
Number of
Rolls
Normal Inspection Tightened Inspection Reduced Inspection
Sam-
ple
Size
AQL Sam-
ple
Size
AQL Sam-
ple
Size
AQL
2.5 4.0 10 2.5 4.0 10 2.5 4.0 10
Ac Re Ac Re Ac Re Ac Re Ac Re Ac Re Ac Re Ac Re Ac Re
2–15 2 |Ch |Co |Ch 2 |Ch |Ch |Ch 2 |Ch |Co |Ch
16–50 3 |Co 0 1 |Co 3 |Ch |Co |Ch 2 |Co 0 1 |Co
51–150 5 0 1 |Cu 1 2 5 |Ch 0 1 |Ch 2 0 1 |Cu 0 2
|Cu |Co |Ch |Co |Cu
151–500 8 |Co 2 3 8 0 1 |Ch 1 2 3 |Co 1 3
501–3200 13 |Co 1 2 3 4 13 |Ch |Co 2 3 5 |Co 0 2 1 4
3201–35 000 20 1 2 2 3 5 6 20 |Ch 1 2 3 4 8 0 2 1 3 2 5
|Co
35 001–500 000 32 2 3 3 4 7 8 32 1 2 2 3 5 6 13 1 3 1 4 3 6
500 001 and over 50 3 4 5 6 10 11 50 2 3 3 4 8 9 20 1 4 2 5 5 8
A
This table is based on Tables I, II-A, II-B, and II-C of ANSI/ASQC Z1.4 using an inspection level of S-3.
|Co = Use ﬁrst sample plan below arrow. If sample size equals or exceeds lot or batch size, do 100 % inspection.
|Cu = Use ﬁrst sample plan above arrow.
Ac = Acceptance number.
Re = Rejection number.
D3715/D3715M − 98 (2019)
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摘要：

ASTM D3715 - D 3715M - 98 (2019) 是一份关于聚四氟乙烯（PTFE）玻璃纤维织物的标准规范，由美国材料与试验协会（ASTM）发布。该标准最初于1998年批准，并于2019年进行重新确认，涵盖了用于电气绝缘、密封、耐高温及防粘等工业领域的PTFE涂层玻璃纤维织物的材料性能、尺寸公差、拉伸强度及表面处理要求。本标准规范对于航空航天、化工、电子及能源行业具有重要参考价值，可帮助制造商、采购方及质量检测人员确保产品符合国际通用的性能与安全标准。

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