CN215649430U

CN215649430U - Nose bridge strip for plane mask

Info

Publication number: CN215649430U
Application number: CN202120036592.8U
Authority: CN
Inventors: 王如鑫; 王洪庆; 李秋利
Original assignee: Tianjin Haiyan Juanjia Cable Co ltd
Current assignee: Tianjin Haiyan Juanjia Cable Co ltd
Priority date: 2021-01-07
Filing date: 2021-01-07
Publication date: 2022-01-28
Anticipated expiration: 2031-01-07

Abstract

The utility model relates to the technical field of special wire rods, and comprises a nose bridge strip for a plane mask, and the nose bridge strip comprises an inner core layer and a shaping layer, wherein the inner core layer comprises an iron wire core strip, the elongation of the iron wire core strip is higher than 20%, the strength of an iron wire supporting strip is higher than 350MPa, the diameter of the iron wire core strip is 0.46-0.54mm, a metal zinc coating is arranged on the surface of the iron wire core strip, and the zinc content of the metal zinc coating is higher than 11g/m²According to the utility model, the plane mask nose bridge strip with certain strength and certain toughness is prepared by changing the material of the raw materials, has certain strength support when being bent, has proper elasticity, has long service life when being bent repeatedly, can perfectly match the size of the mask machine, and prevents the generation of inferior products in the production line of the mask machine.

Description

Nose bridge strip for plane mask

Technical Field

The utility model relates to the technical field of special wires, in particular to a nose bridge strip for a plane mask.

Background

The nose bridge strip is a thin adhesive tape inside the mask, and the nose bridge strip is applied to the plane mask and plays a role in fixing the plane mask and fitting a user on the whole.

The nose bridge strip of the existing plane mask is generally a traditional ribbon which is made of all-plastic materials or an iron core and an insulating layer; the all-plastic nose bridge strip is poor in shaping effect, not tight in fit with a nose bridge, obvious in resilience and poor in protection effect, but in the process of processing a plane mask, the mask machine is convenient to use, and the rejection rate is low; the iron core adds insulating layer bridge of the nose strip and generally is ordinary iron wire adds PVC or PE, and its iron wire is easy to oxidize and rusts, and uses behind PVC and the PE material bridge of the nose strip resilience of certain degree, and the design effect is general, in the course of working of plane gauze mask, can cause higher rejection rate, to sum up, the bridge of the nose strip performance of two kinds of materials is all unsatisfactory, consequently just needs the bridge of the nose strip of a novel material.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the defects in the prior art and provides a nose bridge strip for a plane mask.

In order to achieve the above purposes, the technical scheme adopted by the utility model is as follows: the utility model provides a plane is bridge of nose strip for gauze mask, includes interior sandwich layer and design layer, interior sandwich layer includes iron wire core strip, the surface of iron wire core strip is provided with metal zinc coating, design layer is including mixed plastics design strip, mixed plastics design strip cladding is in the outside of metal zinc coating, design layer sets up to the T font.

According to the embodiment of the utility model, the elongation of the iron wire core strip is higher than 20%, the strength of the iron wire core strip is higher than 350MPa, and the diameter of the iron wire core strip is 0.46-0.54 mm.

According to an embodiment of the utility model, the zinc content of the metallic zinc coating is higher than 11g/m²。

According to the embodiment of the utility model, the mixed plastic molding strip is formed by mixing PP61905, PE7260, EVA and medical grade PE/PP white mother, wherein the proportion of PP61905 is 68.3%, the proportion of PE7260 is 28.4%, the proportion of EVA is 2.3%, and the proportion of medical grade PE/PP white mother is 1%.

According to an embodiment of the utility model, the width of the mixed plastic profile strip is 2.9mm to 3.1 mm.

According to an embodiment of the utility model, further comprising the method of:

(i) taking an iron wire core strip with the diameter of 0.46-0.54mm, wherein the elongation of the iron wire core strip needs to be kept above 20%, and the strength needs to be kept above 350 MPa;

(ii) taking metal zinc to melt at high temperature, and plating the metal zinc on the surface of the iron wire core strip in a hot plating mode to form a complete metal zinc coating, wherein the zinc content of the metal zinc coating is higher than 11g/m²；

(iii) Taking PP61905, PE7260, EVA and medical grade PE/PP white mother, melting, quantitatively mixing, and forming a mixed plastic molding strip, wherein the PP61905 accounts for 68.3%, the PE7260 accounts for 28.4%, the EVA accounts for 2.3%, and the medical grade PE/PP white mother accounts for 1%;

(iv) the method comprises the steps of winding an inner core layer consisting of a metal zinc coating and an iron wire core strip and a shaping layer formed by a mixed plastic shaping strip on the surface of an unreeling machine respectively, sequentially feeding the inner core layer and the shaping layer into a preheating device and an extruder in an active unreeling mode, extruding the inner core layer and the shaping layer into a whole through the extruder, extruding the shaping layer into a T shape, cooling the whole extruded by the inner core layer and the shaping layer into two sections, wherein the first section of cooling is performed by warm water at 70 ℃, the second section of cooling is performed by warm water at 20 ℃, and the cooled inner core layer and the cooled shaping layer are wrapped into a coiled head through guide wheels and are fed into a warehouse for storage.

Compared with the prior art, the utility model has the following beneficial effects: the utility model discloses a plane mask nose bridge strip with certain strength and certain toughness, which is prepared by changing the material of raw materials and adopting a specific die and a special extrusion process and is characterized in that: the metal conductor inside the nose bridge strip is not easy to oxidize and discolor, is not easy to shrink, has certain strength for supporting when being bent, has proper elasticity, is repeatedly bent, has long service life, can perfectly match with the mask machine in size, and prevents the production of inferior-quality products of the mask machine production line.

Drawings

FIG. 1 is a schematic front view of the present invention;

fig. 2 is a schematic side view of the present invention.

In the figure: 1. an inner core layer; 101. an iron wire core strip; 102. a metallic zinc coating; 2. a shaping layer; 201. mixing plastic molding strips.

Detailed Description

The following description is presented to disclose the utility model so as to enable any person skilled in the art to practice the utility model. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art.

The nose bridge strip for the plane mask comprises an inner core layer 1 and a shaping layer 2, wherein the inner core layer 1 comprises an iron wire core strip 101, a metal zinc coating 102 is arranged on the surface of the iron wire core strip 101, the shaping layer 2 comprises a mixed plastic shaping strip 201, the mixed plastic shaping strip 201 is coated on the outer side of the metal zinc coating 102, and the shaping layer 2 is T-shaped.

The elongation of the iron wire core strip 101 is higher than 20%, the strength of the iron wire core strip 101 is higher than 350MPa, and the diameter of the iron wire core strip 101 is 0.46mm-0.54 mm.

The zinc content of the metallic zinc coating layer 102 is higher than 11g/m 2.

The mixed plastic molding strip 201 is formed by mixing PP61905, PE7260, EVA and medical grade PE/PP white mother, wherein the proportion of PP61905 is 68.3%, the proportion of PE7260 is 28.4%, the proportion of EVA is 2.3%, and the proportion of medical grade PE/PP white mother is 1%.

The width of the mixed plastic profile strip 201 is 2.9mm-3.1 mm.

The method also comprises the following steps:

(i) taking an iron wire core strip 101 with the diameter of 0.46-0.54mm, wherein the elongation of the iron wire core strip 101 needs to be kept above 20%, and the strength needs to be kept above 350 MPa;

(ii) taking metal zinc to melt at high temperature, and plating the metal zinc on the surface of the iron wire core strip 101 in a hot plating mode to form a complete metal zinc plating layer 102, wherein the zinc content of the metal zinc plating layer 102 is higher than 11g/m 2;

(iii) PP61905, PE7260, EVA and medical grade PE/PP white mother are melted, then quantitatively mixed to form a mixed plastic molding strip 201, wherein the PP61905 accounts for 68.3%, the PE7260 accounts for 28.4%, the EVA accounts for 2.3%, and the medical grade PE/PP white mother accounts for 1%;

(iv) the method comprises the steps of respectively winding an inner core layer 1 consisting of a metal zinc coating layer 102 and an iron wire core strip 101 and a shaping layer 2 formed by a mixed plastic shaping strip 201 on the surface of an unreeling machine, sequentially feeding the inner core layer 1 and the shaping layer 2 into a preheating device and an extruder in an active unreeling mode, extruding the inner core layer 1 and the shaping layer 2 into a whole through the extruder, simultaneously extruding the shaping layer 2 into a T shape, cooling the whole extruded by the inner core layer 1 and the shaping layer 2 into two sections, wherein the first section of cooling is warm water cooling at 70 ℃, the second section of cooling is warm water cooling at 20 ℃, and the cooled inner core layer 1 and the cooled shaping layer 2 are integrally coiled into a coiled head through guide wheels and are fed into a warehouse for storage.

The foregoing shows and describes the general principles, essential features, and advantages of the utility model.

It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are merely illustrative of the principles of the utility model, but that various changes and modifications may be made without departing from the spirit and scope of the utility model, which fall within the scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a plane is bridge of nose strip for gauze mask, includes interior sandwich layer (1) and design layer (2), its characterized in that, interior sandwich layer (1) includes iron wire core strip (101), the surface of iron wire core strip (101) is provided with metal zinc coating (102), design layer (2) are including mixed plastics design strip (201), mixed plastics design strip (201) cladding in the outside of metal zinc coating (102), design layer (2) set up to the T font.

2. The nose bridge for a flat mask according to claim 1, wherein the elongation of said iron wire core strip (101) is higher than 20%, the strength of said iron wire core strip (101) is higher than 350MPa, and the diameter of said iron wire core strip (101) is 0.46mm-0.54 mm.

3. Nose bridge strip for flat masks according to claim 1, characterized in that the zinc content of the metallic zinc coating (102) is higher than 11g/m²。

4. The nose bridge strip for flat masks according to claim 1, wherein the width of the mixed plastic shaping strip (201) is 2.9mm to 3.1 mm.