CN105365325B - 一种纸蜂窝夹芯结构复合板材及其制备方法 - Google Patents

一种纸蜂窝夹芯结构复合板材及其制备方法 Download PDF

Info

Publication number
CN105365325B
CN105365325B CN201510962113.4A CN201510962113A CN105365325B CN 105365325 B CN105365325 B CN 105365325B CN 201510962113 A CN201510962113 A CN 201510962113A CN 105365325 B CN105365325 B CN 105365325B
Authority
CN
China
Prior art keywords
composite board
paper honeycomb
sandwich structure
honeycomb
honeycomb sandwich
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201510962113.4A
Other languages
English (en)
Other versions
CN105365325A (zh
Inventor
杨小俊
兰青山
张昌汉
叶竹君
覃路韦
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hubei University of Technology
Original Assignee
Hubei University of Technology
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hubei University of Technology filed Critical Hubei University of Technology
Priority to CN201510962113.4A priority Critical patent/CN105365325B/zh
Publication of CN105365325A publication Critical patent/CN105365325A/zh
Application granted granted Critical
Publication of CN105365325B publication Critical patent/CN105365325B/zh
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B29/00—Layered products comprising a layer of paper or cardboard
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/40—Layered products comprising a layer of synthetic resin comprising polyurethanes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B29/00—Layered products comprising a layer of paper or cardboard
    • B32B29/002—Layered products comprising a layer of paper or cardboard as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B29/00—Layered products comprising a layer of paper or cardboard
    • B32B29/02—Layered products comprising a layer of paper or cardboard next to a fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/10—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a discontinuous layer, i.e. formed of separate pieces of material
    • B32B3/12—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a discontinuous layer, i.e. formed of separate pieces of material characterised by a layer of regularly- arranged cells, e.g. a honeycomb structure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
    • B32B3/30—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by a layer formed with recesses or projections, e.g. hollows, grooves, protuberances, ribs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/06—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the heating method
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/08—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the cooling method
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/10—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/56—Damping, energy absorption
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/726—Permeability to liquids, absorption
    • B32B2307/7265—Non-permeable

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Laminated Bodies (AREA)
  • Buffer Packaging (AREA)

Abstract

本发明提供一种纸蜂窝夹芯结构复合板材，包括上面板（1）、纸蜂窝内芯（2）、下面板（3）；所述复合板材上分别均匀分布有凸起，其中复合板材的厚度不变。本发明方法对蜂窝纸芯材料进行加工，通过凹凸结构的模具加热加压，使其一体成型为泡状结构蜂窝纸芯板材，通过改变纸板造型来改变纸板力学性能，从而使该蜂窝板材获得较高的减震、缓冲性能。本发明既保留了传统纸蜂窝夹芯板的原有优良特性，又提升了其在吸能减震、防水方面的能力，尤其适用于一些需要较高抗压强度,又具备良好吸能减震、防水特性要求的机电产品包装材料。同时，该泡状新型蜂窝纸板结构简单，在原生产线上只需小范围改造即可批量生产，是一种具有高性能和良好发展前景的环保型材料。

Description

一种纸蜂窝夹芯结构复合板材及其制备方法
技术领域
本发明涉及包装材料领域，尤其涉及一种纸蜂窝夹芯结构复合板材及其制备方法。
背景技术
近年来包装材料日新月异，蜂窝纸芯板材已在日常包装中大量使用，广泛应用于包装行业，其抗压强度高，质量轻，环保和可再生材质等特性广受好评，但边压强度、横向冲击强度、耐戳穿强度与弹性及缓冲性较差，同时其在防潮性能方面也有所欠缺，受潮后强度减弱，经不起撞击和震动，严重影响使用效果和产品性能。虽然通过特殊处理后可以使其达到一定的防潮要求，但成本也会相应增加。
发明内容
为了解决纸基蜂窝夹芯板在吸能减震、防水方面的问题，本发明提出了一种纸蜂窝夹芯结构复合板材及其制备方法。
该新型复合板不仅仅具有传统纸基蜂窝夹芯板的优良特性，而且在抗戳穿性、可降解性、密封性、吸能抗震及防水性等均比传统纸蜂窝结构板有很大的提高。
本发明的具体技术方案如下：
一种纸蜂窝夹芯结构复合板材，包括上面板（1）、纸蜂窝内芯（2）、下面板（3）；所述复合板材上分别均匀分布有凸起，其中复合板材的厚度不变。
所述凸起的形状为泡状、半球体、圆柱体或多棱台。
所述上面板（1）和下面板（3）的材质是植物纤维或合成纤维。
所述凸起的宽度为80~100mm，高度为10~12mm，密度为20~30个/平方米。
本发明还提供制备上述一次成型的纤维-纸蜂窝芯复合板的方法：
步骤如下：通过粘合剂依次将上面板（1）、纸蜂窝内芯（2）、下面板（3）粘合在一起，在60-70摄氏度，模压压力在4MPa或40bar条件下通过模压模具（4）压制成型，冷却固化即得。
所述模压模具（4）包括上部模具（5）和下部模具（6），所述上部模具（5）和下部模具（6）分别均匀分布有位置和大小相对应的凸起；所述上部模具（5）和下部模具（6）上设置有加热装置和控压装置；所述上部模具（5）上设置有带动其上下运动的气泵。
所述上部模具（5）上凸起的尺寸不小于下部模具（6）上凸起的尺寸。
所述粘合剂为聚氨酯胶粘剂。
所述凸起的形状为泡状、半球体、圆柱体或多棱台。
本发明制备的纤维-纸蜂窝芯复合板，是由植物纤维或合成纤维的面板以及纸基蜂窝夹芯，用聚氨酯粘合剂高温模压而成，即将上面板、下底板与纸蜂窝芯，通过有泡状凸起的模具，在一定温度下模压固化成所需大小尺寸的复合板。
本发明方法对蜂窝纸芯材料进行加工，通过凹凸结构的模具加热加压，使其一体成型为泡状结构蜂窝纸芯板材，通过改变纸板造型来改变纸板力学性能，从而使该蜂窝板材获得较高的减震、缓冲性能。
本发明的有益效果是：
该纤维-纸蜂窝芯复合板既保留了传统纸蜂窝夹芯板的原有优良特性，又提升了其在吸能减震、防水方面的能力。植物纤维或合成纤维的面板在模压过程中能根据模具形状更容易形成泡状结构，有利于提高板材的吸能减震能力。同时在生产的过程中还能直接封边，提高其防水防潮性能，甚至还能做成曲面异型结构，尤其适用于一些需要较高抗压强度,又具备良好吸能减震、防水特性要求的机电产品包装材料。同时，该泡状新型蜂窝纸板结构简单，在原生产线上只需小范围改造即可批量生产，是一种具有高性能和良好发展前景的环保型材料。
本发明方法将纸蜂窝材料一次成型为泡状结构蜂窝板材，使该蜂窝板材的减震缓冲性能得到提升，同时获得较高的生产效率。
附图说明
图1是蜂窝纸芯与上下板面示意图；
图2是将图1组合后的原始板材示意图；
图3是将图2所示板材放入模具中示意图；
图4是将图2所示板材进行加热加压处理示意图；
图5是将图4加热加压完成后的板材进行冷却、固化处理示意图；
图6是为本工艺方法加工完成后的板材示意图；
图7是本发明模压模具的结构示意图；
图8为本发明工艺方法的流程示意图；
其中，1.上面板，2. 纸蜂窝内芯，3.下底板，4模压模具，5上部模具，6下部模具。
具体实施方式
下面结合实施例和附图对本发明做进一步说明。
本产品由上面板、纸蜂窝内芯、下底板组成蜂窝结构板材，加工工艺特征是：纸蜂窝内芯为单层蜂窝纸芯，将纸蜂窝内芯填充于上面板与下面板之间，用聚氨酯粘接发泡，在一定温度和较低压力下模压，模压模具为凹凸结构，加热模压一步成型，使其为泡状结构，其附件和装饰层等可与坯材一步合成、无需化学粘接和后续加工。
面板是天然纤维，纸蜂窝内芯与上面板和面板之间用聚氨酯胶粘剂发泡粘接模压而成。
天然纤维，主要指植物纤维，如亚麻、黄麻、大麻、剑麻、洋麻等麻纤维及椰壳纤维等。
模压模具为有圆形等形状的凹凸结构和加热装置，下部模具固定，上部模具连接气泵等装置，可上下移动。
流程为：粘接板材后进入模具，模具上板下压，同时加热。
其封边加工特征是：纸蜂窝内芯的周边密封是通过挤压蜂窝芯纸，并通过高温与上下面材一步模压复合成型，随后冷却固化。
实施例1
通过粘合剂依次将上面板（1）、纸蜂窝内芯（2）、下面板（3）粘合在一起，在60-70摄氏度，模压压力在4MPa或40bar条件下通过模压模具（4）压制成型，冷却固化即得。
所述模压模具（4）包括上部模具（5）和下部模具（6），所述上部模具（5）和下部模具（6）分别均匀分布有位置和大小相对应的凸起；所述上部模具（5）和下部模具（6）上设置有加热装置和控压装置；所述上部模具（5）上设置有带动其上下运动的气泵。
所述上部模具（5）上凸起的尺寸不小于下部模具（6）上凸起的尺寸。
所述凸起的宽度为80~100mm，高度为10~12mm，密度为20~30个/平方米。
所述粘合剂为聚氨酯胶粘剂。
所述凸起的形状为泡状、半球体、圆柱体或多棱台。
所述上面板（1）和下面板（3）的材质是植物纤维或合成纤维，植物纤维包括植物纤维，如亚麻、黄麻、大麻、剑麻、洋麻等麻纤维及椰壳纤维等。
上述过程中，模压模具为凹凸结构，凹凸结构可以不仅仅为圆形，也可以为其他几何图形，泡状、半球体、圆柱体或多棱台。
纸蜂窝内芯可在市场上直接购买。

Claims (7)

1.一种纸蜂窝夹芯结构复合板材，包括上面板（1）、纸蜂窝内芯（2）、下面板（3）；其特征在于：所述复合板材上均匀分布有凸起，其中复合板材的厚度不变；所述上面板（1）和下面板（3）的材质是植物纤维或合成纤维；所述凸起的宽度为80~100mm，高度为10~12mm，密度为20~30个/平方米。
2.如权利要求1所述的纸蜂窝夹芯结构复合板材，其特征在于：所述凸起的形状为半球体、圆柱体或多棱台。
3.一种制备如权利要求1所述的纸蜂窝夹芯结构复合板材的方法，其特征在于：步骤如下：通过粘合剂依次将上面板（1）、纸蜂窝内芯（2）、下面板（3）粘合在一起，在60-70摄氏度，模压压力在4MPa或40bar条件下通过模压模具（4）压制成型，冷却固化即得；所述模压模具（4）包括上部模具（5）和下部模具（6），所述上部模具（5）和下部模具（6）分别均匀分布有位置和大小相对应的凸起。
4.如权利要求3所述的制备纸蜂窝夹芯结构复合板材的方法，其特征在于：所述上部模具（5）和下部模具（6）上设置有加热装置和控压装置；所述上部模具（5）上设置有带动其上下运动的气泵。
5.如权利要求3所述的制备纸蜂窝夹芯结构复合板材的方法，其特征在于：所述上部模具（5）上凸起的尺寸不小于下部模具（6）上凸起的尺寸。
6.如权利要求3所述的制备纸蜂窝夹芯结构复合板材的方法，其特征在于：所述粘合剂为聚氨酯胶粘剂。
7.如权利要求3所述的制备纸蜂窝夹芯结构复合板材的方法，其特征在于：所述凸起的形状为半球体、圆柱体或正多边体。
CN201510962113.4A 2015-12-21 2015-12-21 一种纸蜂窝夹芯结构复合板材及其制备方法 Expired - Fee Related CN105365325B (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201510962113.4A CN105365325B (zh) 2015-12-21 2015-12-21 一种纸蜂窝夹芯结构复合板材及其制备方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201510962113.4A CN105365325B (zh) 2015-12-21 2015-12-21 一种纸蜂窝夹芯结构复合板材及其制备方法

Publications (2)

Publication Number Publication Date
CN105365325A CN105365325A (zh) 2016-03-02
CN105365325B true CN105365325B (zh) 2017-11-14

Family

ID=55368189

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201510962113.4A Expired - Fee Related CN105365325B (zh) 2015-12-21 2015-12-21 一种纸蜂窝夹芯结构复合板材及其制备方法

Country Status (1)

Country Link
CN (1) CN105365325B (zh)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106183238A (zh) * 2016-07-19 2016-12-07 官忠伟 一种具有夹心结构的复合板及其制备方法
CN109955575B (zh) * 2017-12-14 2023-09-26 广州金发碳纤维新材料发展有限公司 一种模压封边装置及其封边方法
CN114454569A (zh) * 2022-04-08 2022-05-10 保定惠东航空机械设备有限公司 一种可回收的环保型蜂窝夹芯板
CN117183400A (zh) * 2023-11-03 2023-12-08 北京玻钢院复合材料有限公司 连续纤维铺覆模压成型半球蜂窝结构芯层制备方法及半球蜂窝结构芯层
CN117162541A (zh) * 2023-11-03 2023-12-05 北京玻钢院复合材料有限公司 一种带有半球蜂窝芯层的夹芯板、及其制备方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2590921Y (zh) * 2002-09-19 2003-12-10 张世泉 双面半球凹凸纸
CN2741765Y (zh) * 2004-04-13 2005-11-23 张世泉 单面凹凸复合纸
WO2008146969A1 (en) * 2007-05-25 2008-12-04 Ae-Dan Lee Safety guide rail
CN201342814Y (zh) * 2008-12-31 2009-11-11 刘兴成 纸质缓冲材料的制造装置
CN205219983U (zh) * 2015-12-21 2016-05-11 湖北工业大学 一种纸蜂窝夹芯结构复合板材

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2590921Y (zh) * 2002-09-19 2003-12-10 张世泉 双面半球凹凸纸
CN2741765Y (zh) * 2004-04-13 2005-11-23 张世泉 单面凹凸复合纸
WO2008146969A1 (en) * 2007-05-25 2008-12-04 Ae-Dan Lee Safety guide rail
CN201342814Y (zh) * 2008-12-31 2009-11-11 刘兴成 纸质缓冲材料的制造装置
CN205219983U (zh) * 2015-12-21 2016-05-11 湖北工业大学 一种纸蜂窝夹芯结构复合板材

Also Published As

Publication number Publication date
CN105365325A (zh) 2016-03-02

Similar Documents

Publication Publication Date Title
CN105365325B (zh) 一种纸蜂窝夹芯结构复合板材及其制备方法
CN104766934B (zh) 一种用于轻量化电池箱的三明治结构的制备方法
CN102205668B (zh) 石头纸蜂窝纸板及其制造方法
BRPI0501081A (pt) Processo para fabricação de corpos moldados de grafite expandida
CN102294830B (zh) 一种热塑性纤维增强建筑模板的制备方法
CN104169056B (zh) 模压组合纸卷筒的制造方法
CN113021945A (zh) 一种泡沫填充复合材料三维拉胀结构一体化制备方法
CN102825895A (zh) 一种汽车顶棚的一次干法成型的生产工艺
KR910007651A (ko) 성형품의 제조방법
CN205219983U (zh) 一种纸蜂窝夹芯结构复合板材
CN102602112A (zh) 提高模压复合门面板稳定性的方法
CN102139496A (zh) 一种三聚氰胺装饰贴面热压凹凸成形工艺
CN106142804B (zh) 一种cfrt增强塑料蜂窝板的生产工艺及设备
CN201730484U (zh) 一种三聚氰胺浸渍纸覆面纤维板门板
CN109605902A (zh) 一种汽车前围辅助隔音垫的加工方法
CN100333883C (zh) 一种制造塑胶地砖模具及其应用
JP5358628B2 (ja) 発泡ポリプロピレンの成形方法
CN107791916A (zh) 汽车软硬层地毯的生产工艺
CN205857517U (zh) 一种发热复合板结构
CN213321823U (zh) 一种适用于模压工艺净尺寸成型的复合材料结构
CN203238482U (zh) 一种加贴超纤人造革的tpu合成皮革
TW200743575A (en) Method for the manufacture of composite materials
CN108001019A (zh) 一种汽车地毯热压成型方法
CN112606493A (zh) 一种方管加强型聚氨酯纸芯复合备胎盖板的生产方法
CN102206975A (zh) 一种实木复合门线条

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant
CB03 Change of inventor or designer information
CB03 Change of inventor or designer information

Inventor after: Yang Xiaojun

Inventor after: Qin Luwei

Inventor after: Lan Qingshan

Inventor after: Zhang Changhan

Inventor after: Ye Zhujun

Inventor before: Yang Xiaojun

Inventor before: Lan Qingshan

Inventor before: Zhang Changhan

Inventor before: Ye Zhujun

Inventor before: Qin Luwei

CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20171114

Termination date: 20201221