CN-114652609-B - Composite gasket and combined cover for large transfusion package

CN114652609BCN 114652609 BCN114652609 BCN 114652609BCN-114652609-B

Abstract

The invention relates to a composite gasket and a combined cover for large transfusion package, the composite gasket comprises a flaky elastic main body and a supporting framework which plays a role in supporting the elastic main body, at least one puncture part for a puncture outfit to insert is arranged in the middle of the elastic main body, an annular sealing part is formed at the edge of the elastic main body along the circumferential direction of the elastic main body, and the supporting framework is arranged in the elastic main body and positioned between the puncture part and the sealing part. The invention solves the technical problems of high cost, poor sealing performance and poor supporting performance of the gasket in the combined cover for large transfusion package.

Inventors

ZHANG WEIDONG
LIANG AIMIN
XU HONGHAI
BAO WENJIN
LI HUIFAN

Assignees

雷诺丽特恒迅包装科技（北京）有限公司

Dates

Publication Date: 20260512
Application Date: 20220309

Claims (6)

1. The composite gasket is characterized by comprising a flaky elastic main body and a supporting framework for supporting the elastic main body, wherein at least one puncture part for a puncture outfit to insert is arranged in the middle of the elastic main body, an annular sealing part is formed at the edge of the elastic main body along the circumferential direction of the elastic main body, and the supporting framework is arranged in the elastic main body and positioned between the puncture part and the sealing part; the support framework is provided with a plurality of through holes, the elastic main body is filled in each through hole, and the support framework and the elastic main body are bonded into a whole by adopting a bicolor forming method; a fixing ring which is arranged below the elastic main body and used for improving the holding capacity of the puncture outfit, wherein the fixing ring is vertically arranged, the top end of the fixing ring is connected with the bottom of the elastic main body, the hollow position of the fixing ring is vertically opposite to the puncture part, and the puncture outfit can be contracted towards the axial center direction due to the deformation of the fixing ring caused by the penetration of the puncture outfit, so that the holding effect of the puncture outfit is improved; The bottom of elastic body is provided with a plurality of first clearance grooves, and each first clearance groove is the arc recess, and each first clearance groove is followed the circumference of solid fixed ring is even and the interval distribution, in order to encircle the outside of solid fixed ring forms annular clearance structure.
2. The composite spacer of claim 1, wherein the piercing section is located at a top intermediate position of the resilient body, and a groove or annular boss is provided on the piercing section.
3. The composite spacer of claim 1, wherein the top and bottom of the support frame are exposed outside the elastic body, the top of the support frame is in the same plane as the top of the elastic body, the bottom of the support frame is in the same plane as the bottom of the elastic body, and the bottom of the support frame is provided with at least one second void-avoidance groove.
4. The composite spacer of claim 1 or 3, wherein said support frame is made of plastic and said elastomeric body is made of thermoplastic elastomer.
5. A combination cover for large transfusion package, characterized in that the combination cover for large transfusion package comprises a cover body and the composite gasket as set forth in any one of claims 1 to 4, the composite gasket being provided inside the cover body.
6. The combination cover for large infusion package of claim 5, wherein the elastic body of the composite spacer is tightly attached to the inner wall of the cover body.

Description

Composite gasket and combined cover for large transfusion package Technical Field The invention relates to the field of large transfusion packaging, in particular to a composite gasket and a combined cover for large transfusion packaging. Background Conventional large infusion packaging combination covers are basically assembled using a plastic outer cover with a rubber (or elastomer) gasket. The gasket has larger size, higher cost and higher performance requirement on the gasket. In recent years, although the assembly is simplified by forming the elastomer and the outer cover in one step by using a two-color forming technology, the production mode is at most applied to covers adopting an easy-to-tear film opening mode, if the production mode is used on covers adopting other opening modes, the use effect is not ideal due to the relatively high process and cost and the limitation of the support performance, the cost and the like of the elastomer. In addition, the rubber gasket and the elastomer gasket have the defects of long process links in the production of the rubber gasket, high energy consumption, difficult processing of leftover materials, high environmental protection pressure and the like, and the elastomer gasket has the problems of poor sealing performance, low molding efficiency, high price and the like, which cause obstruction to the replacement of the rubber gasket by the elastomer. Aiming at the problems of high cost, poor sealing performance and poor supporting performance of gaskets in a combined cover for large infusion packaging in the related art, no effective solution is provided at present. Therefore, the inventor provides a composite gasket and a combined cover for large transfusion package by virtue of experience and practice of related industries for many years so as to overcome the defects of the prior art. Disclosure of Invention The invention aims to provide a composite gasket and a combined cover for large transfusion packaging, which can increase the hardness of the gasket through the arrangement of a framework while keeping the original rebound resilience and good holding performance of the gasket on a puncture outfit, greatly improve the supporting performance of the gasket and skillfully solve the problem that the hardness and the elasticity of the gasket cannot be taken into consideration. The invention also aims to provide the combined gasket and the combined cover for the large infusion package, which keep good elasticity at the puncture part of the puncture outfit and the part attached to the cover body, thereby ensuring good holding performance of the puncture outfit and stable sealing performance between the puncture outfit and the cover body, and being suitable for popularization and use. The aim of the invention can be achieved by adopting the following technical scheme: The invention provides a composite gasket which comprises a flaky elastic main body and a supporting framework which plays a role in supporting the elastic main body, wherein at least one puncture part for a puncture outfit to insert is arranged in the middle of the elastic main body, an annular sealing part is formed at the edge of the elastic main body along the circumferential direction of the elastic main body, and the supporting framework is arranged in the elastic main body and positioned between the puncture part and the sealing part. In a preferred embodiment of the present invention, the piercing part is located at a top middle position of the elastic body, and a groove or an annular boss is provided on the piercing part. In a preferred embodiment of the present invention, a fixing ring is disposed below the elastic body to enhance the holding capability of the puncture outfit, the fixing ring is vertically disposed, the top end of the fixing ring is connected with the bottom of the elastic body, and the hollow position of the fixing ring is vertically opposite to the puncture part. In a preferred embodiment of the present invention, a plurality of first empty-avoiding grooves are disposed at the bottom of the elastic body, and each of the first empty-avoiding grooves is disposed outside the fixing ring along a circumferential ring of the fixing ring. In a preferred embodiment of the present invention, each of the first hollow-avoiding grooves is an arc-shaped groove, and the first hollow-avoiding grooves are uniformly and alternately distributed along the circumferential direction of the fixing ring, so as to form an annular hollow-avoiding structure around the outer side of the fixing ring. In a preferred embodiment of the present invention, the top and the bottom of the supporting framework are exposed outside the elastic body, the top of the supporting framework and the top of the elastic body are in the same plane, the bottom of the supporting framework and the bottom of the elastic body are in the same plane, and at least one second empty-avoiding groove is formed in the bottom of the s