CN112550887A

CN112550887A - Blow molded container with high barrier layer

Info

Publication number: CN112550887A
Application number: CN202011535158.0A
Authority: CN
Inventors: 陈华卿
Original assignee: Taizhou Xianglong Food Container Technology Co ltd
Current assignee: Taizhou Xianglong Food Container Technology Co ltd
Priority date: 2020-12-23
Filing date: 2020-12-23
Publication date: 2021-03-26
Also published as: WO2022135025A1

Abstract

The invention provides a blow molding container with a high barrier layer, and belongs to the technical field of packaging. The blow molding container solves the problems that the conventional blow molding container with a high barrier layer is thick in the mouth part and high in manufacturing cost. The blow molding container with the high barrier layer comprises a container body, wherein the container body is formed by compounding multiple layers, at least one layer is the high barrier layer, a mouth edge part and a neck part are arranged in the container body, the mouth edge part inclines towards the outer side, a plastic ring is sleeved on the neck part, and the plastic ring is abutted against the lower side surface of the mouth edge part; the plastic ring is fixedly connected with the container body. The blow molding container with the high barrier layer improves the strength of the mouth part of the blow molding container by additionally arranging the plastic ring, so that the strength of the mouth part of the container body can be reduced, the thickness of the mouth part of the container body can be reduced, the use amount of materials of the high barrier layer is reduced, and the purpose of reducing the manufacturing cost of the blow molding container with the high barrier layer is achieved.

Description

Blow molded container with high barrier layer

Technical Field

The invention belongs to the technical field of packaging, and relates to a blow-molded container, in particular to a blow-molded container with a high barrier layer.

Background

The blow-molded container with high barrier layer is produced through extruding thermoplastic resin to obtain tubular plastic parison, hot opening to mold, closing the mold, introducing compressed air to the parison to expand the parison to the inner wall of the mold, cooling and demolding.

In order to ensure smooth filling of the blow molded container, the strength of the mouth portion of the container needs to be ensured, and thus the thickness of the mouth portion of the blow molded container is generally larger than the thickness of other portions. When a high barrier layer is present in a blow-molded container, the thickness of the high barrier layer in the mouth of the blow-molded container is also typically greater than the thickness of the high barrier layer in other locations. The material of the high barrier layer is usually EVOH (ethylene/vinyl alcohol copolymer), which is more expensive than other resins (e.g. PET, PP), so that blow molded containers with high barrier layers are generally more expensive to manufacture than glass containers and iron can containers, and have a problem of insufficient market competitiveness.

In order to improve the strength of the mouth part of the blow-molded container, a technical scheme of double-folding is adopted, as shown in fig. 5, namely, the mouth part of the blow-molded container is sequentially provided with an outward inclined section 1d1 and an inward inclined section 1d2 from bottom to top; the technical scheme also has some defects, 1, the mouth edge of the blow-molded container is provided with burrs or cutting edges generally, so that when the contents are directly drunk, the lips can be stabbed, and the experience of consumers is seriously influenced; 2. when the inner bag of the blow-molded container can be peeled, the mouth part structure enables the inner bag of the mouth part to be easily peeled from the shell, and filling or content storage is influenced.

Disclosure of Invention

The invention provides a blow-molded container with a high barrier layer, and aims to solve the technical problem of ensuring the strength of a mouth part and reducing the manufacturing cost of the blow-molded container with the high barrier layer.

The technical problem to be solved by the invention can be realized by the following technical scheme: a blow molding container with high barrier layer comprises a container body, wherein the container body is formed by compounding multiple layers, at least one layer is the high barrier layer, a mouth edge part and a neck part are arranged in the container body, and the mouth edge part inclines outwards; the plastic ring is fixedly connected with the container body.

Compared with the prior art, the blow molding container with the high barrier layer improves the strength of the mouth part of the blow molding container by additionally arranging the plastic ring, so that the strength of the mouth part of the container body can be reduced, the thickness of the mouth part of the container body can be reduced, the use amount of materials of the high barrier layer is reduced, and the purpose of reducing the manufacturing cost of the blow molding container with the high barrier layer is achieved. The mouth edge part of the blow molding container is not provided with the inward inclined section inclined to the inner side, the sealing element and the upper side surface of the mouth edge part form sealing, the connection firmness between the inner bag and the shell is improved in the sealing process, the inner bag and the shell at the mouth edge part are prevented from being peeled off, burrs or cutting edges can be eliminated or shielded, and the blow molding container has the advantage of high comfort when the contents are directly drunk.

The blow molding container can seal the container opening by adopting more different sealing modes by adjusting the structure of the plastic ring, so that the universality of the blow molding container with the high barrier layer is improved.

In the above-described blow-molded container with a high barrier layer, the container body comprises an inner layer, an outer layer, and a high barrier layer between the inner and outer layers.

In the blow molded container with the high barrier layer, the top part of the plastic ring is fixedly connected with the opening edge part.

In the blow-molded container with a high barrier layer, the inner side surface of the plastic ring is fixedly connected with the neck.

In the blow-molded container with the high barrier layer, the inner side surface of the plastic ring is provided with a first groove or a first bulge, the neck is provided with a second bulge corresponding to the first groove or a second groove corresponding to the first bulge, and the second bulge is embedded into the first groove or the first bulge is embedded into the second groove.

In the blow molding container with the high barrier layer, the plastic ring is fixedly connected with the container body through ultrasonic welding; or the plastic ring is bonded with the container body through glue.

In the above blow molded container with a high barrier, the plastic ring comprises a left half ring and a right half ring.

In the above-described blow molded container with a high barrier layer, the neck has an annular positioning groove into which the plastic ring is inserted.

In the above blow molded container with a high barrier layer, the end portions of the left half ring and the right half ring are fastened in a one-to-one correspondence manner.

In the blow molding container with the high barrier layer, both ends of the left half ring are provided with the first hook and the first hook groove; two ends of the right half ring are provided with a second hook and a second hook groove; the second hooks are embedded into the first hook grooves in a one-to-one corresponding manner, and the first hooks are embedded into the second hook grooves in a one-to-one corresponding manner.

Drawings

Fig. 1 is a schematic perspective view of a blow molded container according to one embodiment.

FIG. 2 is a schematic cross-sectional view of a blow molded container according to one embodiment.

Fig. 3 is a schematic exploded view of a blow molded container according to a second embodiment.

FIG. 4 is a schematic cross-sectional view of a blow molded container according to a second embodiment.

Fig. 5 is a schematic perspective view of a conventional blow molded container.

In the figure, 1, a container body; 1a, a cup bottom; 1b, a cup body; 1c, a neck; 1d, a mouth edge part; 1d1, outwardly sloping section; 1d2, inward sloping section; 1e, a bottle body; 1f, a second protrusion; 1g, annular positioning grooves; 2. a plastic ring; 2a, a threaded portion; 2b, a first groove; 2c, a left semi-ring; 2d, right hemicycle; 2e, a first hook; 2f, a first hook groove; 2g, a second hook; 2h and a second hook groove.

Detailed Description

The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.

The first embodiment is as follows: as shown in fig. 1 and 2, a blow molded container with a high barrier layer includes a container body 1 and a plastic ring 2. The attached drawings of the specification show that the container body 1 is a cup; the container body 1 is sequentially provided with a cup bottom 1a, a cup body 1b, a neck 1c and a rim 1d from bottom to top. The container body 1 is formed by compounding a plurality of layers, at least one layer is a high barrier layer, generally, the container body 1 comprises an inner layer, an outer layer and the high barrier layer positioned between the inner layer and the outer layer, and the high barrier layer is made of EVOH.

The mouth edge part 1d inclines towards the outer side, the cup bottom 1a and the cup body 1b of the cup are smaller than the neck part 1c, and therefore the plastic ring 2 can be sleeved from bottom to top, and the neck part 1c is sleeved with the plastic ring 2. The included angle between the mouth edge part 1d and the neck part 1c is 80-100 degrees, namely the mouth edge part 1d is basically vertically arranged relative to the neck part 1c, so that the matching degree of the plastic ring 2 abutting against the lower side surface of the mouth edge part 1d is improved, and the sealing element and the mouth edge part 1d are favorably sealed. The plastic ring 2 is fixedly connected with the container body 1 through ultrasonic welding, and at least the top of the plastic ring 2 is fixedly connected with the opening edge part 1 d. According to the actual situation, glue can be used for bonding the plastic ring 2 and the container body 1 instead of ultrasonic welding.

Example two: as shown in fig. 3 and 4, the structure and principle of the present embodiment are substantially the same as those of the first embodiment, and the substantially same points are not described redundantly, but only different points are described, where: the container body 1 is a bottle, the body 1e is larger than the neck 1c, and the plastic ring 2 has a threaded portion 2a on the outside, so that the blow-molded container can be sealed with a cap having a thread. The inner side surface of the plastic ring 2 is provided with a first groove 2b or a first bulge, the neck part 1c is provided with a second bulge 1f corresponding to the first groove 2b or a second groove corresponding to the first bulge, and the second bulge 1f is embedded into the first groove 2b or the first bulge is embedded into the second groove, so that the circumferential connection firmness of the plastic ring 2 and the container body 1 is improved, the possibility of rotation of the plastic ring 2 relative to the container body 1 is reduced, and the screwing of the bottle cap and the reopening of the bottle cap are ensured.

The plastic ring 2 includes a left half ring 2c and a right half ring 2d, so that the plastic ring 2 can be mounted on the neck portion 1c even if the neck portion 1c is smaller than the rim portion 1d and the body 1 e. The end of the left half ring 2c is fastened with the end of the right half ring 2d in a one-to-one correspondence manner, so that the mounting firmness of the plastic ring 2 is improved. Both ends of the left half ring 2c are provided with a first hook 2e and a first hook groove 2 f; both ends of the right half ring 2d are provided with a second hook 2g and a second hook groove 2 h; the second hooks 2g are correspondingly embedded into the first hook grooves 2f one by one, and the first hooks 2e are correspondingly embedded into the second hook grooves 2h one by one. The neck part 1c is provided with an annular positioning groove 1g, and the plastic ring 2 is embedded into the annular positioning groove 1g, so that the axial movement of the plastic ring 2 is limited, and the buckling and separation possibility of the left half ring 2c and the right half ring 2d is obviously reduced.

Claims

1. A blow molding container with a high barrier layer comprises a container body (1), wherein the container body (1) is formed by compounding multiple layers, at least one layer is the high barrier layer, a mouth edge part (1 d) and a neck part (1 c) are arranged in the container body (1), and the mouth edge part (1 d) inclines towards the outer side; the plastic ring (2) is fixedly connected with the container body (1).

2. A blow molded container with a high barrier layer according to claim 1 wherein the container body (1) comprises an inner layer, an outer layer and a high barrier layer between the inner and outer layers.

3. A blow molded container with a high barrier layer according to claim 1 characterized in that the top of the plastic ring (2) is fixedly connected with the rim portion (1 d).

4. A blow molded container with a high barrier layer according to claim 1 characterized in that the inner side of the plastic ring (2) is fixedly connected with the neck (1 c).

5. A blow molded container with a high barrier layer according to claim 1, characterized in that the plastic ring (2) has a first groove (2 b) or a first protrusion on its inner side, and the neck (1 c) has a second protrusion (1 f) corresponding to the first groove (2 b) or a second groove corresponding to the first protrusion, and the second protrusion (1 f) is embedded in the first groove (2 b) or the first protrusion is embedded in the second groove.

6. A blow molded container with a high barrier layer according to any of the claims 1 to 5 characterized in that the plastic ring (2) is fixedly connected with the container body (1) by ultrasonic welding; or the plastic ring (2) is bonded with the container body (1) through glue.

7. A blow molded container with a high barrier according to any of the claims 1 to 5 characterized in that said plastic ring (2) comprises a left half ring (2 c) and a right half ring (2 d).

8. A blow molded container with a high barrier layer according to claim 7 characterized in that the neck (1 c) has an annular positioning groove (1 g) and the plastic ring (2) is embedded in the annular positioning groove (1 g).

9. A blow molded container with high barrier according to claim 7 characterized in that the ends of the left half ring (2 c) and the right half ring (2 d) are fastened in a one-to-one correspondence.

10. A blow molded container with high barrier according to claim 9 characterized in that both ends of the left half ring (2 c) have a first hook (2 e) and a first hook groove (2 f); both ends of the right half ring (2 d) are provided with a second hook (2 g) and a second hook groove (2 h); the second hooks (2 g) are correspondingly embedded into the first hook grooves (2 f) one by one, and the first hooks (2 e) are correspondingly embedded into the second hook grooves (2 h) one by one.