Pressure-resistant heat-preservation corrugated board

Abstract

The utility model relates to the technical field of corrugated paper, in particular to a pressure-resistant heat-insulating corrugated board, which mainly solves the problems of low pressure-resistant strength and poor heat-insulating effect of the corrugated board in the prior art, and comprises a corrugated board body, the corrugated board body comprises a surface layer, a first corrugated layer, a supporting layer, a second corrugated layer, a heat preservation layer and a bottom layer which are sequentially arranged from top to bottom, the first corrugated layer is of a wave structure, so that first wave crests and first wave troughs are distributed on the first corrugated layer in a staggered mode in the longitudinal direction, and the second corrugated layer is of a wave structure; the first corrugated layer and the second corrugated layer are staggered, so that second wave crests and second wave troughs are staggered on the second corrugated layer in the longitudinal direction, the first wave crests of the first corrugated layer and the second wave crests of the second corrugated layer are arranged in a staggered mode, the supporting layer comprises a plurality of first strip-shaped paperboards distributed side by side in the longitudinal direction, and the first strip-shaped paperboards are distributed in the transverse direction.

Description

Technical Field

[0001] This utility model relates to the field of corrugated paper technology, and in particular to a pressure-resistant and heat-insulating corrugated cardboard. Background Technology

[0002] Existing corrugated cardboard structures, such as those disclosed in patent publication number CN2091222U, include a type of corrugated cardboard for manufacturing paper cargo packaging containers. This type comprises a face paper and a core paper, with the corrugated core paper consisting of at least two sheets, and an adhesive waterproof coating between the sheets. While this corrugated cardboard structure possesses a certain degree of compressive strength, it suffers from the following drawbacks:

[0003] 1) The single-layer structure cannot block temperature conduction, cannot meet the requirements of cold chain transportation, and has poor thermal insulation performance;

[0004] 2) It is prone to collapse under vertical pressure, which limits its load-bearing capacity;

[0005] 3) It is difficult to simultaneously meet the comprehensive needs of special goods (such as fresh produce and pharmaceuticals) for cushioning, heat insulation, and load-bearing capacity. Utility Model Content

[0006] Therefore, in view of the above problems, this utility model provides a pressure-resistant and heat-insulating corrugated cardboard, which mainly solves the problems of low pressure resistance and poor heat insulation effect of existing corrugated cardboard.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A pressure-resistant and heat-insulating corrugated cardboard includes a corrugated cardboard body, defined as extending longitudinally along the length direction and transversely along the width direction. The corrugated cardboard body includes, from top to bottom, a top layer, a first corrugated layer, a support layer, a second corrugated layer, an insulation layer, and a bottom layer. The first corrugated layer has a wavy structure, with first peaks and first troughs staggered along the longitudinal direction, and the wave height of the first corrugated layer is 3mm to 5mm. The second corrugated layer has a wavy structure, with second peaks and second troughs staggered along the longitudinal direction, and the wave height of the second corrugated layer is 2mm to 3mm. The first peaks of the first corrugated layer and the second peaks of the second corrugated layer are staggered. The support layer includes a plurality of first strip cardboards arranged side by side along the longitudinal direction, each of the first strip cardboards being distributed in the transverse direction. The lower end of the first trough is compositely connected to the upper surface of the first strip cardboard, and the upper end of the second peak is compositely connected to the lower surface of the first strip cardboard.

[0009] Further, the support layer further comprises a plurality of second strip paperboards distributed side by side along the transverse direction, each of the second strip paperboards is distributed along the longitudinal direction and is connected to the upper surface of the first strip paperboard in a composite manner, and each of the second strip paperboards is distributed at the first wave crest.

[0010] Further, the heat preservation layer is a honeycomb structure paperboard, and a plurality of cavities are uniformly distributed in the honeycomb structure paperboard, and the cavities are filled with glass wool.

[0011] Further, the density of the cavities is 6-12 per square centimeter.

[0012] By adopting the foregoing technical scheme, the beneficial effects of the present application are as follows: the pressure-resistant heat preservation corrugated paperboard is characterized in that the first wave crest of the first corrugated layer and the second wave crest of the second corrugated layer are staggered, the first strip paperboard arranged transversely is perpendicular to the corrugated layer and is bonded therewith, a grid-shaped pressure-resistant framework is formed, a longitudinal pressure dispersion structure is formed, stress concentration is avoided, vertical pressure resistance is improved, and the heat preservation layer is arranged to improve the heat preservation effect; the first strip paperboard is distributed along the transverse direction and is connected to the first wave trough and the second wave crest in a composite manner, stress of the corrugated layer is transmitted to the support layer, and the transverse bending strength is improved; the wave height of the first corrugated layer is greater than that of the second corrugated layer, the high wave crest of the first corrugated layer bears the main impact, the low wave crest of the second corrugated layer assists in energy absorption, and the energy absorption efficiency is improved by 30% in the drop test. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 is a sectional view of the embodiment of the present application;

[0014] Figure 2 is a three-dimensional structure schematic view of the first corrugated layer and the support layer in the embodiment of the present application. DETAILED DESCRIPTION

[0015] The present application will be further described in combination with the drawings and specific embodiments.

[0016] The embodiment of the present application is:

[0017] Reference Figure 1 and Figure 2As shown, a kind of pressure-resistant thermal insulation corrugated board, including corrugated board body 100, definition extends as longitudinal direction along the length direction of corrugated board body 100, extends as transverse direction along the width direction of corrugated board body 100, the corrugated board body includes face layer 1, first corrugated layer 2, support layer 3, second corrugated layer 4, thermal insulation layer 5 and bottom layer 6 arranged in turn from top to bottom, the first corrugated layer 2 is in wave structure, so that the first corrugated layer 2 staggered distribution first wave crest 21 and first wave trough 22 along longitudinal direction, the wave height of first corrugated layer 2 is 3mm-5mm, preferably 5mm, the second corrugated layer 4 is in wave structure, so that the second corrugated layer 4 staggered distribution second wave crest 41 and second wave trough 42 along longitudinal direction, the wave height of second corrugated layer 4 is 2mm-3mm, preferably 3mm, the first wave crest 21 of first corrugated layer 2 and the second wave crest 41 of second corrugated layer 4 are staggered arrangement, the support layer 3 includes a plurality of first strip paperboards 31 distributed side by side along longitudinal direction, each first strip paperboard 31 is distributed along transverse direction, the lower end of first wave trough 22 is connected with the upper surface of first strip paperboard 31, and the upper end of second wave crest 41 is connected with the lower surface of first strip paperboard 31.

[0018] The pressure-resistant thermal insulation corrugated board, by the first wave crest 21 of first corrugated layer 2 and the second wave crest 41 of second corrugated layer 4 staggered arrangement, the first strip paperboard 31 arranged transversely is bonded perpendicularly with corrugated layer, forms grid-shaped compression frame, forms longitudinal pressure dispersion structure, avoids stress concentration, improves vertical compression strength, and further improves the thermal insulation effect by the thermal insulation layer 5 arranged;And first strip paperboard 31 is distributed along transverse direction and is connected with first wave trough 22 and second wave crest 41, force of corrugated layer is transmitted to support layer, and the transverse bending strength is improved;Meanwhile, the wave height of first corrugated layer 2 is greater than the wave height of second corrugated layer 4, so that the high wave crest of first corrugated layer 2 bears the main impact, and the low wave crest of second corrugated layer 4 assists energy absorption, and the energy absorption efficiency is improved by 30% in drop test.

[0019] And, the support layer 3 further includes a plurality of second strip paperboards 32 distributed side by side along transverse direction, each second strip paperboard 32 is distributed along longitudinal direction, and is connected with the upper surface of first strip paperboard 31, each second strip paperboard 32 is distributed at first wave crest 21, and the second strip paperboard 32 distributed transversely is bonded orthogonally with first strip paperboard 31 along longitudinal direction, forms grid frame, and the compression strength in two directions is balanced, and the anti-distortion performance is improved, the second strip paperboard 32 is distributed at first wave crest 21, directly reinforces the weak point of corrugated layer, and the interlayer peeling strength is improved to 8N / m, the grid support inhibits the interlayer misplacement caused by high-frequency vibration in transportation, and is suitable for precision instrument packaging.

[0020] In the embodiment, the heat preservation layer 5 is a honeycomb structure paperboard, which is internally provided with uniformly distributed cavities 51, the cavities 51 are filled with glass wool 52, the density of the cavities 51 is 6-12 per square centimeter, preferably 8 per square centimeter, the air is divided into independent sealed cavities 51 by the honeycomb structure, the heat conductivity coefficient is reduced, the heat preservation performance is better than that of the traditional paperboard, in addition, the cavities 51 are filled with glass wool 52, the heat convection is further blocked, the heat preservation time is prolonged to 8 hours when the temperature difference between the inside and outside is 15℃, the honeycomb structure and the glass wool are combined, the weight is reduced compared with the foamed plastic layer under the same heat preservation effect, and the green packaging trend is met.

[0021] In addition, the terms "first", "second", "third", etc. are used only for descriptive purposes and are not to be construed as indicating or implying relative importance or an indicated number of technical features. Thus, features defined with "first", "second", etc. can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly specified and limited.

[0022] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrated; it can be directly connected, or indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0023] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact between the first and second features through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0024] Although the present application is specifically shown and described in connection with preferred embodiments, those skilled in the art should understand that various changes in form and details can be made to the present application without departing from the spirit and scope of the present application defined by the appended claims, and all such changes are within the protection scope of the present application.

Claims

1. A pressure-resistant, heat-insulating corrugated paperboard, characterized by: The corrugated board body includes a face layer, a first corrugated layer, a support layer, a second corrugated layer, a heat preservation layer and a bottom layer arranged in sequence from top to bottom, the first corrugated layer is in a wave structure, so that the first corrugated layer is staggered with first peaks and first valleys along the longitudinal direction, the wave height of the first corrugated layer is 3-5 mm, the second corrugated layer is in a wave structure, so that the second corrugated layer is staggered with second peaks and second valleys along the longitudinal direction, the wave height of the second corrugated layer is 2-3 mm, the first peaks of the first corrugated layer and the second peaks of the second corrugated layer are staggered, the support layer includes a plurality of first strip-shaped paperboards distributed side by side along the longitudinal direction, each first strip-shaped paperboard is distributed along the transverse direction, the lower end of the first valley is connected to the upper surface of the first strip-shaped paperboard, and the upper end of the second peak is connected to the lower surface of the first strip-shaped paperboard.

2. The pressure-resistant insulation corrugated paperboard according to claim 1, characterized in that: The support layer further includes a plurality of second strip-shaped paperboards distributed side by side along the transverse direction, each second strip-shaped paperboard is distributed along the longitudinal direction and connected to the upper surface of the first strip-shaped paperboard, and each second strip-shaped paperboard is distributed at the first peak.

3. Pressure-resistant insulation corrugated paperboard according to claim 1 or 2, characterized in that: The heat preservation layer is a honeycomb structure paperboard, and a plurality of cavities are uniformly distributed in the paperboard, and the cavities are filled with glass wool.

4. The pressure-resistant insulation corrugated paperboard according to claim 3, characterized in that: The density of the cavities is 6-12 per square centimeter.

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