推荐回答（3个）
没错 是头层牛皮，头层牛皮打褶但不打死褶。
头层牛皮是牛身上第一层牛皮，皮表面有原始的皮肤特征。
头层牛皮位于牛皮表面最外层，皮质最具柔韧性/光洁度，有不同的厚度。头层皮有粒面皮、修面皮、压花皮等，其中压花牛皮是用带有图案的花板（铝制、铜制）在皮革表面进行加温压制各种图案。
图案“顾名思义”即：图形的设计方案。
图案教育家陈之佛先生在1928年提出：图案是构想图。它不仅是平面的，也是立体的；是创造性的计划，也是设计实现的阶段。
图案教育家、理论家雷圭元先生在《图案基础》一书中，对图案的定义综述为：“图案是实用美术、装饰美术、建筑美术方面，关于形式、色彩、结构的预先设计。在工艺材料、用途、经济、生产等条件制约下，制成图样，装饰纹样等方案的通称。”（人民美术出版社，1963）
《辞海》艺术分册对“图案”条目的解释：“广义指对某种器物的造型结构、色彩、纹饰进行工艺处理而事先设计的施工方案，制成图样，通称图案。有的器物（如某些木器家具等）除了造型结构，别无装饰纹样，亦属图案范畴（或称立体图案）。狭义则指器物上的装饰纹样和色彩而言。”（上海辞书出版社）
一般而言，我们可以把非再现性的图形表现，都称作图案，包括几何图形、视觉艺术、装饰艺术等。在电脑设计上，我们把各种矢量图也称之为图案。
我们可以说图案是与人们生活密不可的艺术性和实用性相结合的艺术形式。生活中具有装饰意味的花纹或者图形我们都可以称之为图案。
图案根据表现形式则有具象和抽象之分。具象图案其内容可以分为花卉图案、风景图案、人物图案、动物图案等等。明确了图案的概念后，才能更好的学习和研究图案的法则和规律。
图案是实用和装饰相结合的一种美术形式，它把生活中的自然形象进行整理、加工、变化，使它更完美，更适合实际应用。系统地了解和掌握图案的基础知识和技能，不仅能提高对美的欣赏能力，而且还能在实际应用中创造美，得到美的享受。
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