QB/T 1618-2018 English PDF (QBT1618-2018)

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QB/T 1618-2018: Belt
QB/T 1618-2018
QB
LIGHT INDUSTRY STANDARD OF
THE PEOPLE’S REPUBLIC OF CHINA
ICS 59.140.35
Classification number. Y48
Registration number. 63687-2018
Replacing QB/T 1618-2006
Belt
腰带
ISSUED ON. MAY 08, 2018
IMPLEMENTED ON. SEPTEMBER 01, 2018
Issued by. Ministry of Industry and Information Technology of PRC
Table of Contents
Foreword ... 3 
1 Scope ... 5 
2 Normative references ... 5 
3 Terms and definitions ... 6 
4 Product classification ... 6 
5 Requirements ... 7 
6 Test method ... 10 
7 Inspection rules ... 12 
8 Marking, packaging, transport and storage ... 13 
Belt
1 Scope
This standard specifies the terms and definitions, product classification,
requirements, test methods, inspection rules, markings, packaging,
transportation and storage of belt.
This standard applies to the belt of everyday use which is made from leather,
fur, artificial leather/synthetic leather, regenerated leather, textile, and so on.
This standard does not apply to the belt of various special applications.
2 Normative references
The following documents are essential to the application of this document. For
the dated documents, only the versions with the dates indicated are applicable
to this document; for the undated documents, only the latest version (including
all the amendments) are applicable to this standard.
GB/T 2912.1 Textiles - Determination of formaldehyde - Part 1. Free and
hydrolyzed formaldehyde (water extraction method)
GB/T 3920 Textiles - Tests for color fastness - Color fastness to rubbing
GB/T 17592 Textiles - Determination of the banned azo colorants
GB 20400 Leather and fur - Limit of harmful matter
GB 21550 The restriction of hazardous materials in polyvinyl chloride
artificial leather
GB/T 22889 Leather - Physical and mechanical tests - Determination of
surface coating thickness
QB/T 2002.1 Leather hardware fittings - Technical conditions of electroplated
layer
QB/T 2002.2 Leather hardware fittings - Technical conditions of surface
coating
QB/T 2537 Leather - Tests for color fastness - Color fastness to cycles of to-
and-fro rubbing
QB/T 2790 Dyeing fur - Testing method for color fastness to rubbing
QB/T 4117 Belt key
QB/T 5246 Leather products - Test method for dynamic rupture resistance
of belt products
3 Terms and definitions
The following terms and definitions apply to this document.
3.1
Belt head
One end of the belt which is equipped with the belt key.
3.2
Belt bottom
The other end of the belt as relative to the belt head.
3.3
Swing head
The folding portion of the belt head material.
3.4
Belt body
The ring which guides and binds the belt.
3.5
Decorative belt
The belt which is used for decorative purposes, such as ultra-thin decorative
belt, decorative belt for performance, etc.
4 Product classification
4.1 Classification by material used.
- Leather, fur belt;
ultra-fine fiber material are respectively inspected in accordance with GB/T
3920, wherein the coating-free ultra-fine fiber material uses the rectangular
rubbing head.
The sample whose surface coating thickness needs to be measured is
inspected in accordance with GB/T 22889.
6.5 Binding force between belt key and belt
Respectively fix the belt key and belt onto the upper and lower clamps of the
tensile machine, the spacing between the upper clamp and the lower clamp is
150 mm, start the machine, until the belt slips out of the belt key or the belt
ruptures, read the maximum value as the binding force between the belt key
and belt.
6.6 Belt rupture force
Cut a segment of specimen from the belt portion without belt hole (belt tooth),
fix it onto the two clamps of the tensile machine, the spacing between the upper
and lower clamps is 200 mm, start the tensile machine, until the specimen
ruptures, read the maximum force in the tensile process as the belt rupture
force.
6.7 Belt hole rupture force
Cut a segment of the specimen with belt hole, the distance from the belt hole
under test to the belt test end is 10 mm, fix the metal hook with a 4 mm diameter
(bearing stress more than 50 kg) onto the upper clamp of the tensile machine,
hook into the belt hole, use the lower clamp to fix the other end of the belt, the
clamp spacing is 100 mm, start the tensile machine, until the belt is completely
ruptured, read the maximum value as the belt hole rupture force.
For the belt which has a hole diameter less than 4 mm, select the metal hook
of diameter approaching to 3 mm and 2 mm to perform test.
6.8 Belt tooth engagement force
Make the belt key and belt tooth engage firmly, respectively fix them onto the
two clamps of the tensile machine, start the machine, until the belt slips from
the belt tooth, read the maximum value as the belt tooth engagement force.
6.9 Belt rubbing resistance
It is tested in accordance with QB/% 5246, totally 500 tests are made.
6.10 Belt key
It is tested in accordance with QB/T 4117.
8 Marking, packaging, transport and storage
8.1 Marking
8.1.1 The qualified products shall have the following markings.
- Name of organization (production organization or sales organization),
address of organization, contact;
- If necessary, the product use instruction (maintenance);
- If necessary, the product outer package shall be marked of the product
name, cargo number, quantity, storage and transport (protection), and so
on.
8.1.2 The label is specified as below.
- It shall be indicated of the following. product name, product standard
number, trademark, cargo number (model), main material, qualification
(inspection) mark;
- Decorative belt should be indicated of “decorative belt”;
- Composite belt using different material at belt surface and inside shall be
indicated of the main belt surface and inside material in accordance with
the classification provisions in clause 4.1, when a certain material used for
the belt surface/inside exceeds 20% of the total area of the belt
surface/inside material, it shall be indicated;
- If more than 90% of the belt surface and belt inside uses the first layer of
leather (except for the first layer film moved leather), it may be marked of
“real-leather”;
- If the main belt surface material uses splitting leather material, it should be
indicated of the “splitting”;
- If the leather base coating thickness or covering film thickness is more than
the leather base thickness, it should not be marked with “leather”
independently, but marked with “composite material”;
- It shall be indicated of the production origin for the imported product.
8.2 Packaging
The inner and outer packaging of the product shall use appropriate packaging
material, to avoid the product from being damaged in the process of
transportation and storage.