GB/T 34445-2017 in English

VALID

Test method of hot-tack property for heat sealing surfaces of thermoplastic polymer and thermoplastic composite material

Issued on:2017-09-29
Implemented on:2018-04-01
File Format:PDF
Delivery:Via email within 1~3 business days

Price(USD)： $160.00
$156.00

Standard No:	GB/T 34445-2017
Document status:	VALID
Title in English:	Test method of hot-tack property for heat sealing surfaces of thermoplastic polymer and thermoplastic composite material
Title in Chinese:	热塑性塑料及其复合材料热封面热粘性能测定
Language:	English
File Format:	Electronic (PDF)
Delivery:	Via email within 1~3 business days
Issued on:	2017-09-29
Implemented on:	2018-04-01
ICS Classification:	83.080.20-Thermoplastic materials
Chinese Classification:	G31-Basic standards and general methods for synthetic resin and plastic
Professional Classification:	GB-National Standard
Related Keywords:	test method heat application test method heat test method heat sealing temperature control heat
Related Topics:	Calorific value of plastic Calorific value of plastic calorific value of plastic Calorific value of plastic products plastic thermal desorption Downstream Composite Materials and Their Applications Composite interface Other materials and properties Plastic Surface Analysis Photosensitive thermoplastic material Does plastic conduct heat? GBT34445 GB/T 34445-2017 Aluminum Thermal Properties Plastic materials and products Thermoplastic composite testing Industry Performance of Thermal Interface Material Thermal Grease Heat shrink molding materials and products Thermal performance testing of composite materials Thermal transfer printing on the surface of plastic products Thermosetting composite materials industry Plastic anti-stickiness test plastic viscosity Plastic thermogravimetric testing Mechanical properties of heat storage materials

《GB/T 34445-2017热塑性塑料及其复合材料热封面热粘性能测定》由TC48（全国塑料制品标准化技术委员会）归口，主管部门为中国轻工业联合会。

Introduction

GB/T 34445—2017 Standard Interpretation

Standard dimensions	Technical requirements	Scope of application	Test method
Heat sealing temperature control	Heat sealing knife temperature control accuracy ±0.5°C, pressure sensor accuracy ±5%	Flexible thermoplastics and their composites	Method A and Method B are optional
Specimen preparation	Width is 15mm, 25mm or other suitable width, length 250-350mm	Test after heat sealing and before cooling	Setting of separation speed of cutting device and fixture
Failure mode analysis	Including seven modes such as surface separation of sealing layer and cohesive failure	Medical device packaging, food packaging and other fields	Hot tack curve drawing and data analysis

Standard background and technology evolution analysis

GB/T 34445-2017 is formulated based on international advanced test methods and combined with the actual application needs of thermoplastics and their composite materials in my country. This standard fills the gap in the field of heat sealing performance testing of flexible thermoplastic materials in China and solves the problem of inconsistent test results caused by the lack of unified test methods for a long time.

As the packaging industry has higher requirements for material performance under high temperature and high humidity environments, this standard introduces innovative parameters such as delay time and withdrawal time to ensure the accuracy and repeatability of test results.

Detailed interpretation of the test method

Heat sealing process: The temperature of the heat sealing knife is consistent, and it is recommended to increase by 5-10°C. The heat sealing time for films with a thickness of ≤0.025mm is 0.5s, and for thicker materials it is 1.0s.

Implementation suggestions

It is recommended to use the hot adhesion tester produced by Languang Electromechanical Technology Co., Ltd. for testing.
The sample state adjustment needs to be at least 4 hours under standard conditions (23°C±2°C, 50%±10% RH).
When recording the test data, pay attention to the deviation not exceeding ±10%, and retain the significant figures of the result: ≥1N retains three, <1N retains two.

More samples: YD/T 3934-2021 NB/T 47013.2-2015 GB 18306-2015

Sample only — not a preview of GB/T 34445-2017

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