Polyolefin elastomer peritoneal dialysis drainage bag cover cap capable of being thermoplastically processed and preparation method of polyolefin elastomer peritoneal dialysis drainage bag cover cap

A thermoplastic elastomer and thermoplastic processing technology, which is used in the fields of polymer materials, polymer blending, and polymer molding, and can solve problems such as affecting medical drug sealing, easy shrinkage and deformation, and threatening consumers' health.

CN108102201AInactive Publication Date: 2018-06-01深圳恒方大高分子材料科技有限公司 +2
4 Cites 2 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2018-06-01
Estimated Expiration
Not applicable · inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
Patent Text Reader

Abstract

The invention discloses a polyolefin elastomer peritoneal dialysis drainage bag cover cap capable of being thermoplastically processed and a preparation method of the polyolefin elastomer peritoneal dialysis drainage bag cover cap. The preparation method concretely comprises the following steps of adding tackifying resin, a thermoplastic elastomer and a filler in polyolefin, and performing open milling, internal mixing or extrusion to obtain a polyolefin elastomer medical cover cap material capable of being thermoplastically processed. The material can be used for being applied to medical packaging after being prepared into a finished product through processes of extrusion, injection molding and the like. Compared with a soft polyvinyl chloride (SPVC) medical cover cap material which is widely used at present, the material cannot cause any pollution to a medical content, does not generate any peculiar smell and cannot obviously shrink at the sterilization temperature.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The present invention relates to a thermoplastically processable polyolefin elastomer peritoneal dialysis drainage bag cap, in particular to a composition and preparation method of a thermoplastically processable polyolefin elastomer medical cap, which belongs to polymer blending, polymer molding processing, The field of polymer materials. Background technique

[0002] At present, soft polyvinyl chloride (SPVC) materials and polyolefin elastomer materials are mainly used as packaging materials for medical drugs. SPVC material is made of PVC resin, plasticizer, stabilizer, lubricant and other substances through high-speed mixer mixing, extruder plastic extrusion, pelletizing and packaging and other processes. The elasticity, sealing performance, strength and cost of SPVC all meet the material requirements.

[0003] The softness and elasticity of SPVC materials are produced by the addition of plasticizers. In common formulations, plasticizers account f...

Examples

Embodiment 1

[0029] The material provided by the invention is formulated by weight ratio from the following raw materials:

[0030]

[0031] LDPE, EEA, POE and CaCO in the above raw materials 3 Mix on high speed to obtain a homogeneous mixture. After the mixture was kneaded in an internal mixer at 150° C. for 10 minutes, a thermoplastically processable polyolefin elastomer medical cap material was obtained.

Embodiment 2

[0033] The material provided by the invention is formulated by weight ratio from the following raw materials:

[0034] High-density polyethylene HDPE 40 parts

[0035] Tackifying resin EAA 20 parts

[0036] Styrenic thermoplastic elastomer SEBS 100 parts

[0037] Stir HDPE, EAA and SEBS in the above raw materials at high speed to obtain a uniform mixture. After the mixture was kneaded in an internal mixer at 180°C for 15 minutes, a thermoplastically processable polyolefin elastomer medical cap material was obtained.

Embodiment 3

[0039] The material provided by the invention is formulated by weight ratio from the following raw materials:

[0040] Linear low density polyethylene LLDPE 40 parts

[0041] Tackifying resin EVA 30 parts

[0042] Styrenic thermoplastic elastomer SBS 80 parts

[0043] Stir LLDPE, EVA and SBS in the above raw materials at high speed to obtain a uniform mixture. After the mixture was kneaded in an internal mixer at 160°C for 10 minutes, a thermoplastically processable polyolefin elastomer medical cap material was obtained.